EP3887690B1 - A shackle assembly - Google Patents

A shackle assembly Download PDF

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Publication number
EP3887690B1
EP3887690B1 EP19812867.0A EP19812867A EP3887690B1 EP 3887690 B1 EP3887690 B1 EP 3887690B1 EP 19812867 A EP19812867 A EP 19812867A EP 3887690 B1 EP3887690 B1 EP 3887690B1
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EP
European Patent Office
Prior art keywords
shackle
pin
bar
assembly
journal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19812867.0A
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German (de)
English (en)
French (fr)
Other versions
EP3887690C0 (en
EP3887690A1 (en
Inventor
David Howell GUNTER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iqip Holding BV
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Iqip Holding BV
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Publication of EP3887690A1 publication Critical patent/EP3887690A1/en
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Publication of EP3887690C0 publication Critical patent/EP3887690C0/en
Publication of EP3887690B1 publication Critical patent/EP3887690B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G15/00—Chain couplings, Shackles; Chain joints; Chain links; Chain bushes
    • F16G15/04—Quickly-detachable chain couplings; Shackles chain links with rapid junction means are classified according to the corresponding kind of chain
    • F16G15/06—Shackles designed for attachment by joint pins to chain elements, e.g. D-shackles so called harp links; the D-chain links are classified according to the corresponding kind of chain

Definitions

  • the present invention relates to a shackle assembly, comprising a shackle body, a shackle pin and a pin displacement mechanism for moving the shackle pin along its centreline between a shackle closed position and a shackle open position.
  • Such a shackle assembly is known from WO 2013/095107 .
  • the known shackle assembly has a driving device which is coupled to the shackle body for driving the shackle pin and is arranged to reciprocate the shackle pin between a shackle closed position and a shackle open position.
  • the driving device comprises a hydraulic cylinder which is mounted at an outer side of the shackle body and extends parallel to the centreline of the shackle pin.
  • a disadvantage of the known shackle assembly is that it takes a lot of space next to the shackle body, in particular in the shackle open position where the hydraulic cylinder is extended. Besides, the centre of gravity of the known shackle assembly is located far from the shackle body.
  • GB 2 301 860 is related to a hydraulic shackle comprising a shackle body having an attachment for lifting equipment, a lock bolt for inward or outward movement through holes made in the shackle body and a power cylinder which operates the lock bolt via a mechanism.
  • the mechanism comprises a link arm which at one end thereof is pivotably secured to the lock bolt, and the mechanism is geometrically designed such that the opposite end of the link arm describes a curve as the lock bolt moves in or out, said mechanism exerting on the lock bolt a transverse force at the end of the lock bolt, in addition to an axial force, which transverse force is designed to work in the opposite direction of the force which, due to the load, acts on the lock bolt within the shackle body, in order to counteract downward deflection of the lock bolt caused by a suspended load.
  • GB 1 349 430 is related to a bobbin hanger having bellows that can be inflated to drive a slider downwardly and so cause two pawls to move outwardly of the hanger about a common pin.
  • bellows When the bellows are not inflated the slider is moved upwardly by a spring. In the absence of a bobbin a coiled spring then returns the pawls to the retracted setting shown.
  • the hanger is carried by a support arm that can be moved downwardly to cause the hanger to enter into an upstanding bobbin. Thereafter inflation of the bellows causes the pawls to move outwardly of the hanger and engage under internal shoulders of the bobbin. The support arm is then raised to cause the pawls to lift and support the bobbin. Under these circumstances, when the bellows are deflated, the pawls do not retract since they are held outwardly disposed by the weight of the bobbin.
  • EP 2 487 103 is related to an actuator apparatus adapted to be remotely actuated underwater.
  • the apparatus comprises a body, a piston having a pin extending therefrom, wherein the piston is adapted to sealingly engage the body to define a piston chamber, and a conduits for connecting the piston chamber to a fluid container to create a pressure difference between the piston chamber and the ambient water to cause the piston to move relative to the body to cause the pin to move between first and second positions thereof.
  • An object of the invention is to provide a compact shackle assembly.
  • the pin displacement mechanism comprises a rotation element which is mounted to the shackle body and rotatable with respect to the shackle body about an axis of rotation which extends perpendicularly to the centreline of the shackle pin and a transmission between the rotation element and the shackle pin for transmitting a rotation of the rotation element to a displacement of the shackle pin along its centreline.
  • the shackle body extends in a main plane, whereas the axis of rotation extends perpendicularly to the main plane. This means that the rotation element can move within the main plane of the shackle body, which provides the opportunity to make the shackle assembly also compact in a direction perpendicularly to the main plane.
  • the shackle body may comprise a U-shape having a bottom and legs extending from the bottom, whereas end portions of the legs are provided with eyes for receiving the shackle pin, wherein the axis of rotation extends at a level between said bottom and the shackle pin. This allows to minimize the height of the shackle assembly as measured in a direction from the bottom to the eyes.
  • the rotation element and the transmission form part of a four-bar linkage
  • the rotation element comprises a first bar which is pivotally coupled to a second bar through a first journal, which second bar is pivotally coupled to a third bar through a second journal remote from the first journal, which third bar is rotatably coupled to the shackle body remote from the second journal, wherein the shackle body forms a fourth bar
  • the second bar is rotatably coupled to the shackle pin through a pin pivot
  • the pin pivot lies at a distance from the first and second journals
  • the bars and journals are dimensioned and arranged such that the pin pivot is movable in the same direction as the direction of the centreline of the shackle pin.
  • the four-bar linkage may form a so-called Hoekens linkage, in which the first journal, the second journal and the pin pivot are aligned.
  • the Hoekens linkage allows the pin pivot to follow a straight path when turning the rotation element by a predefined angle with respect to the shackle body.
  • the shackle assembly will be dimensioned such that the pin pivot follows the straight path between the open and closed shackle position.
  • the pin pivot may be located outside a circumference of the shackle body in the shackle closed position.
  • a linear actuator may be rotatably mounted to both the shackle body and the third bar in order to operate the linkage.
  • the linear actuator may be a hydraulic cylinder.
  • the rotation element comprises a first bar which is pivotally coupled to a second bar through a first journal, which second bar is rotatably coupled to the shackle pin through a pin pivot at a distance from the first journal, and wherein the shackle pin is guided along its centreline by the shackle body.
  • the rotation element forms a crank of a crank mechanism
  • the second bar forms a connecting rod
  • the shackle pin forms a piston which is guided by the shackle body.
  • the shackle body comprises a U-shape having a bottom and legs extending from the bottom, whereas end portions of the legs are provided with eyes for receiving the shackle pin, the shackle pin may be guided by one of the eyes.
  • a linear actuator may be rotatably mounted to both the first bar and the second bar at a distance from the axis of rotation, the first journal and the pin pivot.
  • the first bar and the second bar form a type of scissors which are rotated with respect to each other through the linear actuator. This means that the stroke of the linear actuator is smaller than the stroke of the shackle pin, which provides the opportunity to create a compact shackle assembly.
  • the invention is also related to a shackle assembly, comprising a shackle body, a shackle pin and a pin displacement mechanism for moving the shackle pin along its centreline between a shackle closed position and a shackle open position, wherein the shackle pin is provided with a lateral projection located at a distance from the shackle body in the shackle closed position, wherein the shackle assembly is provided with a fluid bellow which is located between the lateral projection and the shackle body such that upon introducing a fluid into the fluid bellow it pushes the lateral projection including the shackle pin away from the shackle body, hence moving the shackle pin from the shackle closed position to the shackle open position.
  • This assembly differs from the assembly as described hereinbefore in that it does not have a rotation element and the cooperating transmission.
  • the shackle assembly also has the advantage of a compact shape in a direction along the centreline of the shackle pin.
  • the fluid bellow may be operated by introducing water, for example.
  • the lateral projection is formed by a flange and the fluid bellow surrounds at least a portion of the shackle pin in the shackle open position.
  • the fluid bellow comprise a coil-shaped flexible tube. Introducing a fluid into the tube creates a tubular coil, whereas emptying the tube leads to a folded compact coil.
  • the shackle pin may engage a spring which is located between the shackle pin and the shackle body so as to move the shackle pin from the shackle open position to the shackle closed position when fluid is released from the fluid bellow.
  • the lateral projection may be formed by a plate which is reciprocatingly slidable within a cylinder that is fixed to the shackle body, wherein a space in the cylinder at a side of the plate facing away from the shackle body forms a pressure chamber for receiving a pressurized fluid so as to be able to move the shackle pin from the open shackle position to the closed shackle position.
  • the pressure chamber and the fluid bellow may be part of a hydraulic circuit, which is controlled in a conventional manner.
  • Figs. 1-3 show an embodiment of a shackle assembly 1 according to the invention.
  • the shackle assembly 1 comprises a U-shaped shackle body 2 which has a bottom and legs which extend from the bottom.
  • the shackle body 2 extends in a main plane. End portions of the legs are provided with eyes 3 in which a shackle pin 4 fits.
  • the shackle pin 4 has a centreline 5 and is movable with respect to the shackle body 2 along its centreline 5 between a shackle closed position and a shackle open position.
  • the leftmost picture of Fig. 3 shows the shackle closed position and the other two pictures show shackle open positions.
  • the rightmost picture shows the shackle pin 4 in an end position.
  • the shackle pin 4 can be moved with respect to the shackle body 2 through a pin displacement mechanism 6, which comprises a four-bar linkage in the form of a so-called Hoekens linkage, which linkage is illustrated by additional lines in the rightmost picture of Fig. 3 . Furthermore, Fig. 4 shows a dimensional relationship of a Hoekens linkage in more detail.
  • the displacement mechanism 6 is provided with a first bar 7, a second bar 8 and a third bar 9.
  • a fourth bar is formed by a support 10 which is fixed to the shackle body 2.
  • the first bar 7 is pivotally coupled to the second bar 8 through a first journal 11 and the second bar 8 is pivotally coupled to the third bar 9 through a second journal 12 which is located at a distance from the first journal 11.
  • the first bar 7 is rotatably coupled to the support 10 through a third journal 13 which is located at a distance from the first journal 11 and the third bar 9 is rotatably coupled to the support 10 through a fourth journal 14 which is located at a distance from the second journal 12 and the third journal 13.
  • the axes of rotation of the journals 11-14 extend perpendicularly to the main plane of the shackle body 2.
  • the second bar 8 is rotatably coupled to an end of the shackle pin 4 at a pin pivot 15 whereas the second journal 12 lies halfway of the second bar 8 between the first journal 11 and the pin pivot 15.
  • the leftmost picture of Fig. 3 shows that the pin pivot 15 is located outside the shackle body 2 in the shackle closed position.
  • a plane through axes of rotation of the third and fourth journals 13, 14 extends parallel to a plane in which the centreline 5 and an axis of rotation of the pin pivot 15 lies.
  • the pin pivot 15 and the first to fourth journals 11-14 are arranged such that the axis of rotation of the pin pivot 15 is movable along the centreline 5 of the shackle pin 4, as demonstrated in Fig. 3 .
  • the dimensionless distances between the first to fourth journals 11-14 and the pin pivot 15 are illustrated in Fig. 4 .
  • the arrangement of the Hoekens linkage as shown in Figs. 1-4 allows the pin pivot 15 to follow a straight path when turning the first bar 7 by a predefined angle with respect to the shackle body 2.
  • the displacement mechanism 6 is also provided with a hydraulic actuator 16 of which one side is rotatably coupled to the support 10 and another side is rotatably coupled to the third bar 9.
  • a hydraulic actuator 16 of which one side is rotatably coupled to the support 10 and another side is rotatably coupled to the third bar 9.
  • the rightmost picture of Fig. 3 shows that even in the end position of the shackle pin 4 the displacement mechanism 6 does not extend beyond the pin pivot 15 as seen from the shackle body 2, which creates a compact shackle assembly 1.
  • Fig. 3 shows that the stroke of the hydraulic actuator 16 is smaller than the stroke of the pin pivot 15, which is caused by applying the Hoekens linkage.
  • the hydraulic actuator may be replaced by any alternative actuator or an actuator may be omitted such that the displacement mechanism 6 can be operated manually, remotely and/or by means of an ROV when in underwater operations.
  • ROV when in underwater operations.
  • the support 10 is fixed to the shackle body 2 by a bracket 17 which is clamped about one of the legs of the shackle body 2.
  • the support 10 also comprises two parallel feet 18 which extend parallel to the centreline 5 of the shackle pin 4 at an outer side of one eye 3 of the shackle body 2. This allows the shackle assembly 1 to rest in upright orientation on the ground as shown in Figs. 1-3 .
  • the first bar 7 may be seen as being a rotation element which is mounted to the shackle body 2 and which is rotatable with respect to the shackle body 2 about an axis of rotation which extends at a distance from and perpendicularly to the centreline 5 of the shackle pin 4.
  • the rotation element and the shackle pin 4 are connected to each other via a transmission in the form of the second bar 8, the third bar 9 and the cooperating journals 11, 12 and 14 which results in a straight movement of the pin pivot 15 between the open and closed shackle position of the shackle pin 4.
  • Fig. 5 shows an alternative embodiment of the shackle assembly 1 according to the invention. Parts of the embodiment as shown in Fig. 5 which are similar to parts in the embodiment as shown in Figs. 1-3 have the same reference signs.
  • the pin displacement mechanism 6 of the embodiment as shown in Fig. 5 is a type of crank mechanism, in which the first bar 7 forms a crank, the second bar 8 forms a connecting rod and the shackle pin 4 forms a piston which is guided by one eye 3 of the shackle body 2.
  • the first bar 7 is rotatably coupled to the support 10 through the third journal 13 and pivotally coupled to the second bar 8 through the first journal 11 at a distance from the third journal 13.
  • the second bar 8 is rotatably coupled to an end of the shackle pin 4 at the pin pivot 15 remote from the first journal 11. Due to the guidance by the eye 3 the shackle pin 4 is movable along the centreline 5, as demonstrated in Fig. 5 .
  • the hydraulic actuator 16 is rotatably coupled to the first bar 7 and the second bar 8.
  • Fig. 5 shows that the stroke of the hydraulic actuator 16 is smaller than the stroke of the pin pivot 15, which is caused by applying the crank mechanism and the location of mounting the hydraulic actuator 16.
  • Figs. 6-8 show another alternative embodiment of a shackle assembly 20 according to the invention.
  • This embodiment also comprises a shackle body 21, a shackle pin 22 and a pin displacement mechanism 23 for moving the shackle pin 22 along its centreline between a shackle closed position and a shackle open position.
  • the pin displacement mechanism 23 does not comprise a rotation element like the embodiments as described hereinbefore.
  • Fig. 8 shows that a circular plate 24 is fixed to the shackle pin 22 through a connector pin 25.
  • the circular plate 24 is located at a distance from the shackle body 21 in the shackle closed position, which is shown in Figs. 6 and 8 .
  • the shackle assembly 20 is provided with a fluid bellow in the form of a coil-shaped flexible tube 26 which is located between the shackle body 21 and the plate 24.
  • the plate 24 is movable within a cylinder 27 which holds the tube 26 in coil shape when a fluid is introduced into the tube 26 such that it expands as shown in Fig. 7 .
  • the plate 24 including the shackle pin 22 is moved in a direction away from the shackle body 21, hence moving the shackle pin 22 from the shackle closed position to the shackle open position.
  • the expanded coiled tube 26 surrounds the retracted shackle pin 22, see Fig. 7 . It is noted that mounting the circular plate 24 to the shackle pin 22 by the connector pin 25 can be applied to a shackle pin of a standard conventional shackle assembly.
  • a fluid is introduced into the cylinder 27 at a side of the plate 24 opposite to the side where the tube 26 is located.
  • the fluid in the tube 26 can be discharged so as to allow the tube 26 to shrink. This condition is shown in Figs. 6 and 8 .
  • the shackle assembly 20 may be provided with a spring which is located at a side of the plate 24 opposite to the side where the tube 26 is located. During introducing a fluid into the tube 26 and moving the plate 24 in a direction away from the shackle body 21 the spring is loaded whereas the spring will move the shackle pin 22 back upon discharging the fluid from the tube 26.
  • Filling and emptying the tube 26 and the cylinder 27 may be controlled by a hydraulic controller, for example.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
EP19812867.0A 2018-11-28 2019-11-20 A shackle assembly Active EP3887690B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2022084A NL2022084B1 (en) 2018-11-28 2018-11-28 A shackle assembly
PCT/NL2019/050763 WO2020111938A1 (en) 2018-11-28 2019-11-20 A shackle assembly

Publications (3)

Publication Number Publication Date
EP3887690A1 EP3887690A1 (en) 2021-10-06
EP3887690C0 EP3887690C0 (en) 2024-05-15
EP3887690B1 true EP3887690B1 (en) 2024-05-15

Family

ID=65409439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19812867.0A Active EP3887690B1 (en) 2018-11-28 2019-11-20 A shackle assembly

Country Status (12)

Country Link
US (1) US20230332672A1 (zh)
EP (1) EP3887690B1 (zh)
JP (1) JP7463368B2 (zh)
KR (1) KR102578145B1 (zh)
CN (1) CN113167359B (zh)
AU (1) AU2019390206A1 (zh)
BR (1) BR112021010083A2 (zh)
CA (1) CA3120193A1 (zh)
ES (1) ES2980609T3 (zh)
NL (1) NL2022084B1 (zh)
SG (1) SG11202105072WA (zh)
WO (1) WO2020111938A1 (zh)

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078679A (en) * 1960-02-03 1963-02-26 Dunlop Rubber Co Pneumatic operating device
JPS5136817B2 (zh) * 1971-10-11 1976-10-12
JPS5824606A (ja) * 1981-07-31 1983-02-14 Yoshimori Nukaga 伸縮ベロ−ズを使用した流体圧シリンダ
JPH0717830U (ja) * 1993-09-03 1995-03-31 株式会社大堀 Ｈ形鋼吊下げ用シャックル
US5488844A (en) * 1994-04-26 1996-02-06 Winner International Royalty Corporation Security device
NO300587B1 (no) * 1995-06-08 1997-06-23 Balmoral Norge As Hydraulisk sjakkel
DE10018549B4 (de) * 2000-04-14 2008-02-14 Thyssenkrupp Gft Tiefbautechnik Gmbh Lastenanschlagvorrichtung
WO2006055581A2 (en) * 2004-11-16 2006-05-26 Oceaneering International, Inc. Shackle and method for installing it subsea
WO2010074360A1 (en) * 2008-12-24 2010-07-01 P&H Co., Ltd. Automated shackle assembly
AU2010212330A1 (en) * 2009-08-14 2011-03-03 Proserv Offshore Pty Ltd Shackle guide and shackle closing mechanism
EP2487103A1 (en) * 2011-02-14 2012-08-15 Selantic AS Actuator apparatus
NL2007948C2 (en) 2011-12-12 2013-06-13 Ihc Handling Systems Vof Shackle assembly.
KR20130126200A (ko) * 2012-05-11 2013-11-20 주식회사 로얄기초산업 반자동 샤클을 이용한 지중 컬럼 설치방법

Also Published As

Publication number Publication date
ES2980609T3 (es) 2024-10-02
CN113167359A (zh) 2021-07-23
US20230332672A1 (en) 2023-10-19
EP3887690C0 (en) 2024-05-15
WO2020111938A1 (en) 2020-06-04
CA3120193A1 (en) 2020-06-04
AU2019390206A1 (en) 2021-06-10
BR112021010083A2 (pt) 2021-08-24
SG11202105072WA (en) 2021-06-29
JP7463368B2 (ja) 2024-04-08
EP3887690A1 (en) 2021-10-06
KR20210091791A (ko) 2021-07-22
CN113167359B (zh) 2023-04-14
KR102578145B1 (ko) 2023-09-13
NL2022084B1 (en) 2020-06-25
JP2022509641A (ja) 2022-01-21

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